
Use one of the colors.txt.

colors.txt.VanessaE
-> has normal colors for a wide range of blocks and is from VanessaE.

colors.txt.reduced
-> has a reduced color range:
* dirt, dirt with grass, grass (in all height variants), junglegrass, papyrus
  and saplings are drawn in the dirt-with-grass-color
* sand, desert sand, desert stone, dry shrub and cactus are all drawn like
  desert sand
* water/watersource keeps its color
* stone is drawn in its normal color
* gravel is drawn in its normal color
* all flowers are drawn in one color (they may be indications of gardens)
* leaves, jungleleaves and apples share one color
* jungletree and tree have the same color


TileGenerator.cpp.git-diff
-> output of "git diff TileGenerator.cpp"
source is https://github.com/ShadowNinja/minetest-mapper-cpp

The TileGenerator.cpp file contains three changes:
1. Around line 440: the "5" in "if( pos.y < 5 ) {" stands for a map block with the z-value of 5,
   which includes blocks from height 0-15 (or so). The above statement will draw all blocks that
   have a height of less than 5*16=80
   Setting this to a fixed number (i.e. pos.y == 0 ) can also yield intresting results.

2. Around line 480: There, you can make the mapper look through nodes and ignore them (like air).
   Leaves and apples are candidates for this, but you can also look for one specific node and let
   the mapper draw only that one.

3. Around line 528: if (sourceColor != 0xC80000 ) {  disables all shading for all other colors
   except 200 0 0 (colors.txt notation). This reduces map file size and makes the buildings stick
   out more.
